arXiv stat.ML
· Papers
The Effective Number of Nonzeros: Theory and Regularization for Sparse Recovery
arXiv:2603.13826v2 Announce Type: replace-cross Abstract: Classical sparse recovery treats all nonzero entries equally, though numerical noise often creates long tails of negligible coefficients. This paper develops an entropy-based notion of effective sparsity to measure the coefficients carrying significant mass. The